[Xen-changelog] [xen-3.4-testing] iommu: Gracefully fail to initialise iommu on generic x86 platforms.

["Xen patchbot-3.4-testing" <patchbot-3.4-testing@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1274506958 -3600
# Node ID e655245aa1714984b64e0c22669cb00b4add81df
# Parent  a552edf3aadf19bb19b00b7c86e7bcb839ed16e4
iommu: Gracefully fail to initialise iommu on generic x86 platforms.

Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
xen-unstable changeset:   21446:93410e5e4ad8
xen-unstable date:        Sat May 22 06:36:41 2010 +0100
---
 xen/include/asm-x86/hvm/iommu.h |    4 +++-
 1 files changed, 3 insertions(+), 1 deletion(-)

diff -r a552edf3aadf -r e655245aa171 xen/include/asm-x86/hvm/iommu.h
--- a/xen/include/asm-x86/hvm/iommu.h   Wed May 19 20:52:31 2010 +0100
+++ b/xen/include/asm-x86/hvm/iommu.h   Sat May 22 06:42:38 2010 +0100
@@ -1,5 +1,7 @@
 #ifndef __ASM_X86_HVM_IOMMU_H__
 #define __ASM_X86_HVM_IOMMU_H__
+
+#include <xen/errno.h>
 
 struct iommu_ops;
 extern struct iommu_ops intel_iommu_ops;
@@ -31,7 +33,7 @@ static inline int iommu_hardware_setup(v
     case X86_VENDOR_AMD:
         return amd_iov_detect();
     default:
-        BUG();
+        return -ENODEV;
     }
 
     return 0;

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